ACPI / video: Add "Asus UL30VT" to ACPI video detect blacklist

commit d0c2ce16bec0afa6013b4c5220ca4c9c67210215 upstream.

The ACPI video driver can't control backlight correctly on
Asus UL30VT.  Vendor driver (asus-laptop) can work.  This patch is to
add "Asus UL30VT" to ACPI video detect blacklist in order to use
asus-laptop for video control on the "Asus UL30VT" rather than ACPI
video driver.

References: https://bugzilla.kernel.org/show_bug.cgi?id=32592
Reported-by: Alex Williamson <alex.williamson@redhat.com>
Signed-off-by: Lan Tianyu <tianyu.lan@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>

diff --git a/drivers/acpi/video_detect.c b/drivers/acpi/video_detect.c
index b84d4d5..d9c0199 100644 (file)
--- a/drivers/acpi/video_detect.c
+++ b/drivers/acpi/video_detect.c
@@ -156,6 +156,14 @@ static struct dmi_system_id video_detect_dmi_table[] = {
                DMI_MATCH(DMI_BOARD_NAME, "X360"),
                },
        },
+       {
+       .callback = video_detect_force_vendor,
+       .ident = "Asus UL30VT",
+       .matches = {
+               DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK Computer Inc."),
+               DMI_MATCH(DMI_PRODUCT_NAME, "UL30VT"),
+               },
+       },
        { },
 };